P Plastic waste management by micro, small, and medium-sized enterprises (msmes) and informal-sector operators plays an important role in material recovery and the circular economy, yet it faces limitations in process efficiency, resource and environmental management, operational data recording, and occupational safety. this study develops a sustainability performance assessment model integrating green lean manufacturing, eco-efficiency, and safety culture for plastic waste management in bantar gebang, bekasi, indonesia. an exploratory mixed-methods design combined a prisma-based systematic literature review and bibliometric analysis, a three-round delphi process, indicator weighting, a 1–5 scoring rubric, field application, dashboard/kpi development, technical verification, application-based validation, and expert validation. thirteen final indicators were obtained. the highest weights were assigned to ppe compliance (11.67%), co₂ emissions (9.57%), occupational safety and health training (9.52%), 5s scorecard (8.57%), and output/input ratio (8.52%). the sustainability performance index increased from 57.24 in september to 71.00 in october and 72.55 in november 2025. expert validation of 17 items by six experts achieved an overall mean of 4.37, median of 4.00, standard deviation of 0.54, and 97.06% agreement. the model and dashboard/kpi were therefore considered suitable for sustainability evaluation, monitoring, and improvement-priority identification within the study scope